Detachable drive-chain.



N'QQBIBAGQ. PATENTED APR. 24, 1906.

1.1. R. VROGERS. DBTACHABLE DRIVE CHAIN.

APPLICATION FILED AUG; 22, 1904.

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PATENTED APR. 24, 1906.

L. R; ROGERS. DETAGHABLE DRIVE CHAIN.

APPLICATION FILED AUG. 22, 1904.

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LEONARD R. ROGERS, OF WVOROESTER, MASSACHUSETTS, ASSIGNOR TO WILLTAM H. GATES, OF WORCESTER, MASSACHUSETTS.

DETACHABLE DRIVE-CHAIN No. 818,469. Specification of Letters Patent. Iatented April 24, 1906.

' Application filed August 22, 904. Serial No. 221,617

To all h it y eon/067%: link toward the end of the side line into the 5 Be it known that I, LEONARD R. RoeEns, position shown by the link in Fig. 5, there a citizen of the United States, residing at by carrying the neck oi the pivotal pin 5 into Worcester, in the county of Worcester and the restricted slot 11, in which position the Commonwealth of Massachusetts, have inpivotal pin is held from longitudinal movevented a new and useful Improvement in ment by the engagement of its shoulders 13 6o Detachable Drive-Chains, of which the follow' by the sides of the side link. When the piv-' ing is a specification accompanied by drawotal pins 5 have been drawn into the slots of ings, forming a part of the same, in Which the other respective side links, the center Figure 1 represents a side view of a portion links may then be rocked ontheir pivotal pins, of a drive-chain embodying my invention. to bring them into alinement with the side Fig. 2 is a top view of the same. Fig. 3 is a links, as shown in Figs. 1, 2, and 3. In this central sectional view. Fig. 4 is a detached position of alinement of the central and side view of one of the central links. Fig. 5 is a links the sliding movement of the central and side view of that portion of the chain shown side links one upon the other is prevented by in Fig. 1 with the central links turned at increasing the length of the opposing ends of right angles to the side links in order toenable the central links. to cause them to substanthe central and side links to be separated, and tially abut, as shown at 16 16, Fig. 3, and the Fig. 6 is a detached view of one of the pivotal extended ends are rounded, as shown at 17 pins. 17, Fig. 4, concentrically with the pivotal Similar reference-figures refer to similar pins to allow a rocking movement of the'cen- 7 5 parts in the different views. tral links on the pivotal pins 5. The exten- The drive -chain to which my invention sion of the ends of the central links likewise relates comprises a series of side links 1 and 2, secures a uniform width of all the spaces 18 duplicates of each other, and also a series of 18 throughout the chain, thereby securing a central links 3 and 4, also duplieates of each uniform engagement of the chain with the other, said central and side links being pivotteeth of a. sprocket-Wheel, and in order to enally connected by removable pivotal pins 5, able the links of the chain'to engage more said pivotal pins 5 being duplicates of each readily with the teeth of the sprocket-wheel other. The central links 3 and .4 are conthe central section of the central links are nected near their opposite ends by sleeves 6, chamfered, as shown at 19 19, Fig. 2, and the entering segmental holes 7 in the center links opposing ends are likewlse chamfered at each to prevent the sleevesfrom turning in the corner, as shown at 20, Fig. 2.

links. Openin s 8 and9 are preferablyformed When the chain is extended, as in use, the

in the center inks to reduce their weight. abutting ends 16 of the central links abso- The side links 1 and 2 are provided with cirlutely prevent any movement of the links 0 cular openings 10 sufficiently large to receive which would bring the pivotal pins 5 into the ends of the pivotal pins 5, and extending alinement with the clrcular openings 10 10 toward the ends of the side links are slots 11, and allow the chain to become disconnected. communicating with the openings 10 and What I claim as my invention, and desire adapted to receive the necks 12 of the pivotal to secure by Letters Patent, is g 5 pins 5, said necks 12 being formed on the piv- A drive-chain comprislng, central and s de otal pins by cutting away a portion of the links arranged in airs pivotal pins hinging pin on diametrically opposite sides and formsaid central and si e links, said central hnks ing shoulders 13 13, adapted to inclose the having their opposing ends between said side sides of the side links 1 and 2. links extended to reduce the width of the 00 The central and side links .are assembled space between said side links uniform with by placing the central links at right angles to the space between the central links.

the side links ain order to allow a lvotal pin 5 Dated this 20th day of August, 1904.

to be inserte through the circu ar 0 enings 1 10 of the side links and through the s eeves 6 v LEONARD ROGERS of the central links, as represented by the W1tnesses:

central links 15, Fig. 5. The pivotal pms are PENELOPE COMBERBAOH, then locked in place by drawing the center Rnrus B. FOWLER. 

